Pseudowire and Circuit Emulation Services Overview
Pseudowires enable you to carry legacy Layer 2 services over a cost-effective and predominant deployed underlying network. It decouples the services protocol and applications from the underlying facilities that carry them.
The underlying physical network could be intellectual property (IP)/multiprotocol label switching (MPLS), Ethernet, WiMAX, P2P Microwave, DOCSIS, or PON, depending on the application (see Figure 1). Pseudowires evolved as the technology that enables you to build fully converged networks as a result of the general move towards IP/MPLS-based networks.
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